Leases, Adoption ASU No. 2016-02 (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets and Liabilities, Lessee [Abstract]
Right-of-use asset	$ 671
Operating Lease, Liability	$ 672
ASU 2016-02 [Member]
Assets and Liabilities, Lessee [Abstract]
Right-of-use asset		$ 751
Operating Lease, Liability		$ 751